document.write( "Question 513344: two types of fertilizer are being used, one costs 14 dollars per pound and the other is 18 dollars per pound. if the mixture endes with a total of 200 pounds and costs 15 dollars per pound how much of each type is used? \n" ); document.write( "
Algebra.Com's Answer #343042 by Maths68(1474)\"\" \"About 
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Let
\n" ); document.write( "Type 1 = x pound
\n" ); document.write( "Type 2 = 200-x pound
\n" ); document.write( "Mixture = 200 pound
\n" ); document.write( "=============================================================================
\n" ); document.write( "Type 1 cost per pound = 14$
\n" ); document.write( "Type 2 cost per pound = $18
\n" ); document.write( "Mixture cost per pound = $15
\n" ); document.write( "==============================================================================
\n" ); document.write( "(Cost of Type 1 * Type 1)+(Cost of Type 2 * Type 2)=(Cost of Mixture * Mixture)
\n" ); document.write( "(14*x)+(18*(200-x))=15*200
\n" ); document.write( "14x+3600-18x=3000
\n" ); document.write( "14x-18x=3000-3600
\n" ); document.write( "-4x=-600
\n" ); document.write( "-4x/-4=-600/-4
\n" ); document.write( "x=150
\n" ); document.write( "=========================================================================
\n" ); document.write( "Type 1 = x = 150 pound
\n" ); document.write( "Type 2 = 200-x=200-150= 50 pound
\n" ); document.write( "Mixture = 200 pound
\n" ); document.write( "=========================================================================
\n" ); document.write( "Check
\n" ); document.write( "(150*14)+(50*18)=200*15
\n" ); document.write( "2100+900=3000
\n" ); document.write( "3000=3000\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
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